Michał Wołonkiewicz
Verified Expert in Engineering
AWS Developer
Tallinn, Estonia
Toptal member since December 14, 2018
Michał is a systems administrator, DevOps engineer, and tech writer. He has commercial experience as a systems engineer in both the public and private sectors (notably in telco). He's particularly proud of his work when he improved the infrastructure at an investment bank and then taught developers how to use it. He supports open source initiatives (as a former Gentoo Linux contributor), loves to automate, and is flexible with the tech he uses.
Portfolio
Experience
- Linux - 9 years
- PostgreSQL - 6 years
- VMware - 6 years
- Amazon Web Services (AWS) - 5 years
- DevOps - 5 years
- Continuous Delivery (CD) - 5 years
- Terraform - 3 years
- Jenkins - 2 years
Availability
Preferred Environment
Amazon Web Services (AWS), Vim Text Editor, Python, Bash, VMware, Linux
The most amazing...
...thing I've done was migrating the services from one DC to another which added huge value.
Work Experience
Technical Reviewer
Packt Publishing
- Ensured that Packt Publishing produced useful, engaging, and high-quality content that the readers will love.
- Reviewed "Hands-On DevOps with Vagrant" by Alex Braunton which was released October 2018.
Freelancer
Self-employed
- Created a HTTP rev-proxy designed for microservices.
- Tuned Docker images (size, toolchain).
- Developed a self-hosted app deployment platform.
- Created the automated build for a development environment so that software developers could deploy to their lab in no time.
- Designed dozens of AWS environments.
DevOps, AWS/Aptible Specialist
Kindbody
- Supported the development team.
- Configured the VPN with the office network.
- Configured Jenkins to meet the development team requirements.
- Migrated applications from Elastic Beanstalk to EKS.
- Rewrote the infrastructure into Terraform code.
- Prepared helm charts for our products.
- Monitored health and performance with Prometheus and Grafana.
- Implemented security best practices.
- Developed some minor hacks (i.e., implement a self-service portal for marketing people with AWS SSM).
Cloud Infrastructure Engineer
Dunnhumby
- Supported the integration of internal applications with GCP.
- Designed and supported GitLab pipelines (the build, deployment, and tests).
Linux System Administrator
Dunnhumby
- Provided bare-metal server administration.
- Provisioned new servers, imaging, monitoring, and other daily routines.
- Monitored and maintained daily servers, applications, and containers.
- Performed backup, file replication, and script management for servers.
- Tested and applied new software and patches.
- Collaborated with developers (support and guidance).
- Identified and solved infrastructure architectural problems.
Development Tool Administrator at Site Reliability Engineering
Nordea Capital Markets
- Moved the services to another data center and migrated us to a different operating system (from Windows to Linux).
- Implemented Puppet-based provisioning together with Vagrant base boxes.
- Migrated data from an embedded format to external databases.
- Added SSL and high-availability proxies in front of the application servers.
- Established a self-service web portal.
- Developed the infrastructure status page with service availability overview, outage notices, and more.
- Supported development process by creating the project, the build plan, and giving continuous integration environment examples.
- Wrote migration and deployment plans and guides.
- Supported local and remote groups of users.
Solution Integration Engineer
Gemalto
- Developed the solution integration plan by describing the complete hardware solution (servers, racks, firewall, and more).
- Installed and deployed the solution on hardware.
- Wrote the customer acceptance plan in collaboration with the validation team.
- Integrated and deployed the solution at the customer site within the customer infrastructure.
- Connected the solution to external flows (SMSC/GGSN, billing module, and more).
- Wrote the operation and maintenance guide which permits the transition from the project team to the support team.
- Supported a local group of developers and validators by creating the test and production environments.
Technical Consulting Engineer
NGE Polska
- Took care of the IT infrastructure at the office.
- Analyzed the customer requirements and sales department support.
- Prepared the test environment and made technical presentations.
- Integrated and implemented a new solution.
- Created technical documentation.
- Provided internal and external customer support.
- Actively made contributions to the portfolio.
- Initiated and maintained contact with partners and suppliers.
Systems Engineer
Crocom Computer Systems
- Took care of the IT infrastructure at the HQ.
- Provided customer support especially concerning the deployment of new systems and services.
- Reviewed and prepared the offer.
Experience
Atlassian Stack Migration
https://gitlab.com/michw/docker-atlassian-confluenceEducation
Master of Science Degree in Telecommunication Systems and Networks
Gdańsk University of Technology - Gdańsk, Poland
Certifications
AWS Certified Cloud Practitioner
Amazon (in partnership with Alpine Testing Solutions)
Red Hat Certified System Administrator 6
Red Hat
VMware Certified Professional
VMware
Cisco Certified Network Associate
Cisco
Skills
Libraries/APIs
Jenkins Pipeline, Jenkins Job DSL, GitHub API
Tools
Terraform, CircleCI, Puppet, Vagrant, Atlassian, Atlassian Suite, Apache, Apache Tomcat, GitLab, VMware, Ansible, VirtualBox, Vim Text Editor, Packer, Artifactory, NGINX, Postfix, Jenkins, AWS IAM, VMware vSphere, Slack, Amazon Simple Notification Service (SNS), Helm, Amazon EKS, Grafana
Platforms
Linux, Amazon Web Services (AWS), Red Hat Linux, Docker, Kubernetes, Oracle, Windows, Google Cloud Platform (GCP), AWS Lambda, Aptible, AWS Elastic Beanstalk
Paradigms
DevOps, Continuous Delivery (CD), Continuous Integration (CI), Unit Testing, HIPAA Compliance
Languages
Bash, Java, JavaScript, Python, PHP
Frameworks
Django, CakePHP
Storage
MySQL, PostgreSQL, SQLite, Amazon S3 (AWS S3)
Other
Gentoo, Cloud Architecture, Cloud Infrastructure, System Administration, Documentation, Cisco, Juniper, Xpdf, Relational Database Services (RDS), NFS, FreeNAS, WebLogic, AWS Auto Scaling, Prometheus, Veeam
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